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kaizen | Adaptive Run Training

Run Kaizen · 90 ratings · ★ 2.9

2.9
★★★★★
90 ratings
5 ★
19 (21%)
4 ★
19 (21%)
3 ★
6 (7%)
2 ★
19 (21%)
1 ★
25 (28%)
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Top complaints - extracted from 28 negative reviews

Recurring phrases mined from 1-2★ reviews. The bigger the percentage, the more users have the same problem. Fix the top 2-3 in your version and you have product-market fit on day one.

1
"strava"
5 negative reviews mention this · 18% of all complaints
★★★★ "I don't have a strava account, but you can't proceed with installation unless you authorize connection with your strava account..." - Tom F
2
"crashes"
5 negative reviews mention this · 18% of all complaints
★★★★ "paid for subscription but now just crashes upon opening every time" - Jack Staines
3
"every"
5 negative reviews mention this · 18% of all complaints
★★★★ "paid for subscription but now just crashes upon opening every time" - Jack Staines
4
"times"
4 negative reviews mention this · 14% of all complaints
★★★★ "I can't understand why you would pay so much for an app that's only real function is to predict times. Thought it would help map out topline volume planning for a training cycle but it doesn't even do this. Poor interface also doesn't help." - Darin Middleton
5
"doesn"
3 negative reviews mention this · 11% of all complaints
★★★★★ "Latest update broke the miles conversion. Units change but the value doesn't. The concept behind this app is neat, but it's incredibly sluggish on Android and the massive intra-week swings in mileage targets make it effectively useless for …" - Kevin Fronczak
6
"week"
3 negative reviews mention this · 11% of all complaints
★★★★★ "Latest update broke the miles conversion. Units change but the value doesn't. The concept behind this app is neat, but it's incredibly sluggish on Android and the massive intra-week swings in mileage targets make it effectively useless for …" - Kevin Fronczak
7
"account"
3 negative reviews mention this · 11% of all complaints
★★★★ "I don't have a strava account, but you can't proceed with installation unless you authorize connection with your strava account..." - Tom F
8
"phone"
3 negative reviews mention this · 11% of all complaints
★★★★ "The app keep crashing on my Poco F3 phone, so unfortunately need to uninstall" - Firdaus Md Ali
9
"impossible"
3 negative reviews mention this · 11% of all complaints
★★★★ "app does not connect, impossible to create an account.... uninstalled" - marcelin Nebenhaus
10
"access"
3 negative reviews mention this · 11% of all complaints
★★★★ "the ui is just trash feel like if i had access. to the code for a week i could do a better job - and yes i am a software developer that hates writing uis not sure what the donut represents and what you need me to do to fill it it says if i …" - Mark Davies
11
"goal"
3 negative reviews mention this · 11% of all complaints
★★★★ "the ui is just trash feel like if i had access. to the code for a week i could do a better job - and yes i am a software developer that hates writing uis not sure what the donut represents and what you need me to do to fill it it says if i …" - Mark Davies
12
"free"
3 negative reviews mention this · 11% of all complaints
★★★★ "the ui is just trash feel like if i had access. to the code for a week i could do a better job - and yes i am a software developer that hates writing uis not sure what the donut represents and what you need me to do to fill it it says if i …" - Mark Davies

📋 All 28 negative reviews

Every 1-2★ review we fetched. Use the copy button to grab them all for your own analysis (paste into ChatGPT/Claude with a prompt like "summarize core user problems, group by theme, ignore bugs, focus on missing features").

★★★★ Darin Middleton 3/14/2026 v1.6.3
I can't understand why you would pay so much for an app that's only real function is to predict times. Thought it would help map out topline volume planning for a training cycle but it doesn't even do this. Poor interface also doesn't help.
★★★★ Tom F 2/8/2026 v1.6.01
I don't have a strava account, but you can't proceed with installation unless you authorize connection with your strava account...
★★★★ Firdaus Md Ali 1/3/2026 v1.5.9
The app keep crashing on my Poco F3 phone, so unfortunately need to uninstall
★★★★ Jack Staines 10/22/2025 v1.5.6
paid for subscription but now just crashes upon opening every time
★★★★ marcelin Nebenhaus 9/11/2025
app does not connect, impossible to create an account.... uninstalled
★★★★ John Johnson 8/7/2025
It didn't detect my races in Strava even after I tagged them and updated the title like Kaizen said. The predictions seemed way off because of that so I just uninstalled it.
★★★★ Mark Davies 8/1/2025 v1.4.11
the ui is just trash feel like if i had access. to the code for a week i could do a better job - and yes i am a software developer that hates writing uis not sure what the donut represents and what you need me to do to fill it it says if i out in more effort then it fills more then why is it a distance goal im so confused, feel like it needs an into or an example. some sort of free version of the app would help immensely even if it was slimmed down because having to pay 80£ a year is too muc
★★★★ Matthew Benson 8/1/2025
2 mins off prediction 5k. Said 17.16, Iran 15.10 just a week later. Has access to all my data. 1 star seems mean, but the entire point is to predict times so.....
★★★★ A Collins 5/9/2025 v1.4.9
Poorly designed, a rather pointless app tbh
★★★★ John Glanville 4/21/2025
Asks for phone number and then never competes initial analysis
★★★★ Nam Bui 4/20/2025 v1.4.8
tried the free trial and nothing works. poor experience
★★★★ Marco 4/20/2025 v1.4.8
app wouldn't start. canceling subscription
★★★★ Venkata Sai Pavan Kumar Gangaraju 1/16/2025 v1.4.2
App is closing by itself tried installing multiple times but after login it is closing and not responding making it un useful.NEED IMPROVEMENT
★★★★ Jack Murphy 1/12/2025
Constantly crashes. Hopefully gets fixed soon.
★★★★ Rachel Beck 9/13/2024 v1.3.44
Can't connect it to strava
★★★★ Pete 8/28/2024 v1.3.42
I should have deleted the app as soon as it asked for my phone number. Seriously, before worrying about whether or not people are going to steal your app you should worry about making an app that is functional. Got asked about 10000 times to authorize my Strava. Which set me back to the home screen every time I was playing with the settings. And as soon as I set a goal the whole thing glitched out (with a spelling mistake in the error message 🤦).
★★★★ Dylan Burns 7/9/2024 v1.3.47
Doesn't work
★★★★ Richard Harrison 5/14/2024 v1.3.45
Just keeps closing so can't use it to try it
★★★★ Gabriel Paaske 5/7/2024
Downloaded because it was promoted by the marathon ill be running, but the app is dogwater. Trying to set the date and time goal was nigh impossible. Each time i scrolled past August to set it to September it just bounced back. Also, the UI is very bad.
★★★★ Luciano Quercia 4/30/2024 v1.3.44
It just crashes every time. Impossible to use 🙄
★★★★ Joanne Hughes 4/21/2024
Couldn't even get it to open. It just kept crashing.
★★★★ Craig Lewis 4/14/2024 v1.3.44
Just don't work, crashes constantly
★★★★ Lee Jones 11/19/2023 v1.3.36
Why do you *require* my telephone number? Why can't I use my email address to register an account like 99.999% of other services?
★★★★★ Kevin Fronczak 3/24/2026 v1.6.3
Latest update broke the miles conversion. Units change but the value doesn't. The concept behind this app is neat, but it's incredibly sluggish on Android and the massive intra-week swings in mileage targets make it effectively useless for planning out a week. There's something interesting here, but the execution is lacking
★★★★★ Edwin Ekberg 6/27/2025 v1.4.11
Buggy
★★★★★ Dan Haugrud 3/3/2025 v1.4.5
Highly flawed for interval training. I am a paid user, and emailed them 2x without a response, so need to let others know before they would purchase. Let's say you do 10x 1 mile track workout at 6:30/mile pace with 90 seconds standing recovery. Kaizen views that as you lite jogging at 8:00/mile pace and punishes your score. Unless you stop your watch after every interval, Kaizen is way off. These are pre-programmed rest breaks in Coros, so stopping my watch is not an option. Garbage prediction.
★★★★★ Beau Coffman 9/20/2024 v1.3.44
This thing crashes every time I open it. Its almost not usable.
★★★★★ Hamish Simmers 2/22/2024 v1.3.42
Nice presentation, but inaccurate prediction and unhelpful advice (for me anyway). Despite having access to all my Strava data, it's predicting a half-marathon time about 10 minutes slower than I could confidently run at present. And it's not cheap. Looked good at first but unfortunately I don't think the algorithms are up to the job. Garmin watch or Luke Humphrey Running race predictor are much more accurate, and free (once you have the watch!)

Sentiment summary

42%
Positive (4-5★)
9%
Neutral (3★)
49%
Negative (1-2★)

🎯 Significant negative sentiment - strong clone-and-improve target. Read the complaints above.